Universal transcriptomic hallmarks of mammalian ageing and mortality

By Agewell Brief Editorial Desk · Published June 1, 2026 at 8:00 a.m. EDT

Original reporting: Universal transcriptomic hallmarks of mammalian ageing and mortality.

A multi-species transcriptomic analysis reveals conserved ageing signatures and modular clocks, linking inflammation, mitochondrial function, and chromatin dynamics to mortality.

Three things to remember

11,000+ transcriptomes across 4 mammals identify conserved ageing genes.
CDKN1A and LGALS3 protein levels correlate with human mortality.
Caloric restriction and Klotho target mitochondrial and metabolic modules.

Source

This signal is based on Universal transcriptomic hallmarks of mammalian ageing and mortality. from PubMed. Read the original report for full context.

Health note: Observational transcriptomic study; causality not established.

Pioneer Lineage · Historical Precursors

Scientific Precursors & Foundational Discoveries

1961 Leonard Hayflick

Hayflick and Moorhead demonstrated that normal human fibroblasts have a finite replicative lifespan in culture, a phenomenon now known as the Hayflick limit. This established cellular senescence as a fundamental mechanism of ageing, directly anticipating the preprint's finding that replicative senescence and damage-accumulation models recapitulate mortality-associated transcriptomic features, including upregulation of CDKN1A (p21), a key senescence marker.

1956 Denham Harman

Harman proposed the free radical theory of ageing, positing that reactive oxygen species (ROS) generated by mitochondrial metabolism cause cumulative oxidative damage to cellular components, driving ageing and mortality. The preprint's identification of mitochondrial function as a core ageing module, and its validation that metabolic inhibition and γ-irradiation (which generate ROS) recapitulate mortality-associated transcriptomic signatures, directly supports and extends Harman's hypothesis at the transcriptomic level.

Three things to remember

Source

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